1 files changed, 264 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/common/system_utils_win.cpp b/gfx/angle/checkout/src/common/system_utils_win.cpp
new file mode 100644
index 0000000000..8770235cd7
--- /dev/null
+++ b/gfx/angle/checkout/src/common/system_utils_win.cpp
@@ -0,0 +1,264 @@
+//
+// Copyright 2014 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// system_utils_win.cpp: Implementation of OS-specific functions for Windows
+
+#include "system_utils.h"
+
+#include <stdarg.h>
+#include <windows.h>
+#include <array>
+#include <vector>
+
+namespace angle
+{
+
+namespace
+{
+
+std::string GetPath(HMODULE module)
+{
+    std::array<wchar_t, MAX_PATH> executableFileBuf;
+    DWORD executablePathLen = GetModuleFileNameW(module, executableFileBuf.data(),
+                                                 static_cast<DWORD>(executableFileBuf.size()));
+    return Narrow(executablePathLen > 0 ? executableFileBuf.data() : L"");
+}
+
+std::string GetDirectory(HMODULE module)
+{
+    std::string executablePath = GetPath(module);
+    return StripFilenameFromPath(executablePath);
+}
+
+}  // anonymous namespace
+
+std::string GetExecutablePath()
+{
+    return GetPath(nullptr);
+}
+
+std::string GetExecutableDirectory()
+{
+    return GetDirectory(nullptr);
+}
+
+const char *GetSharedLibraryExtension()
+{
+    return "dll";
+}
+
+Optional<std::string> GetCWD()
+{
+    std::array<wchar_t, MAX_PATH> pathBuf;
+    DWORD result = GetCurrentDirectoryW(static_cast<DWORD>(pathBuf.size()), pathBuf.data());
+    if (result == 0)
+    {
+        return Optional<std::string>::Invalid();
+    }
+    return Narrow(pathBuf.data());
+}
+
+bool SetCWD(const char *dirName)
+{
+    return (SetCurrentDirectoryW(Widen(dirName).c_str()) == TRUE);
+}
+
+const char *GetPathSeparatorForEnvironmentVar()
+{
+    return ";";
+}
+
+double GetCurrentSystemTime()
+{
+    LARGE_INTEGER frequency = {};
+    QueryPerformanceFrequency(&frequency);
+
+    LARGE_INTEGER curTime;
+    QueryPerformanceCounter(&curTime);
+
+    return static_cast<double>(curTime.QuadPart) / frequency.QuadPart;
+}
+
+double GetCurrentProcessCpuTime()
+{
+    FILETIME creationTime = {};
+    FILETIME exitTime     = {};
+    FILETIME kernelTime   = {};
+    FILETIME userTime     = {};
+
+    // Note this will not give accurate results if the current thread is
+    // scheduled for less than the tick rate, which is often 15 ms. In that
+    // case, GetProcessTimes will not return different values, making it
+    // possible to end up with 0 ms for a process that takes 93% of a core
+    // (14/15 ms)!  An alternative is QueryProcessCycleTime but there is no
+    // simple way to convert cycles back to seconds, and on top of that, it's
+    // not supported pre-Windows Vista.
+
+    // Returns 100-ns intervals, so we want to divide by 1e7 to get seconds
+    GetProcessTimes(GetCurrentProcess(), &creationTime, &exitTime, &kernelTime, &userTime);
+
+    ULARGE_INTEGER kernelInt64;
+    kernelInt64.LowPart      = kernelTime.dwLowDateTime;
+    kernelInt64.HighPart     = kernelTime.dwHighDateTime;
+    double systemTimeSeconds = static_cast<double>(kernelInt64.QuadPart) * 1e-7;
+
+    ULARGE_INTEGER userInt64;
+    userInt64.LowPart      = userTime.dwLowDateTime;
+    userInt64.HighPart     = userTime.dwHighDateTime;
+    double userTimeSeconds = static_cast<double>(userInt64.QuadPart) * 1e-7;
+
+    return systemTimeSeconds + userTimeSeconds;
+}
+
+bool IsDirectory(const char *filename)
+{
+    WIN32_FILE_ATTRIBUTE_DATA fileInformation;
+
+    BOOL result =
+        GetFileAttributesExW(Widen(filename).c_str(), GetFileExInfoStandard, &fileInformation);
+    if (result)
+    {
+        DWORD attribs = fileInformation.dwFileAttributes;
+        return (attribs != INVALID_FILE_ATTRIBUTES) && ((attribs & FILE_ATTRIBUTE_DIRECTORY) > 0);
+    }
+
+    return false;
+}
+
+bool IsDebuggerAttached()
+{
+    return !!::IsDebuggerPresent();
+}
+
+void BreakDebugger()
+{
+    __debugbreak();
+}
+
+const char *GetExecutableExtension()
+{
+    return ".exe";
+}
+
+char GetPathSeparator()
+{
+    return '\\';
+}
+
+std::string GetModuleDirectory()
+{
+// GetModuleHandleEx is unavailable on UWP
+#if !defined(ANGLE_IS_WINUWP)
+    static int placeholderSymbol = 0;
+    HMODULE module               = nullptr;
+    if (GetModuleHandleExW(
+            GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
+            reinterpret_cast<LPCWSTR>(&placeholderSymbol), &module))
+    {
+        return GetDirectory(module);
+    }
+#endif
+    return GetDirectory(nullptr);
+}
+
+std::string GetRootDirectory()
+{
+    return "C:\\";
+}
+
+Optional<std::string> GetTempDirectory()
+{
+    char tempDirOut[MAX_PATH + 1];
+    GetTempPathA(MAX_PATH + 1, tempDirOut);
+    std::string tempDir = std::string(tempDirOut);
+
+    if (tempDir.length() < 0 || tempDir.length() > MAX_PATH)
+    {
+        return Optional<std::string>::Invalid();
+    }
+
+    if (tempDir.length() > 0 && tempDir.back() == '\\')
+    {
+        tempDir.pop_back();
+    }
+
+    return tempDir;
+}
+
+Optional<std::string> CreateTemporaryFileInDirectory(const std::string &directory)
+{
+    char fileName[MAX_PATH + 1];
+    if (GetTempFileNameA(directory.c_str(), "ANGLE", 0, fileName) == 0)
+        return Optional<std::string>::Invalid();
+
+    return std::string(fileName);
+}
+
+std::string GetLibraryPath(void *libraryHandle)
+{
+    if (!libraryHandle)
+    {
+        return "";
+    }
+
+    std::array<wchar_t, MAX_PATH> buffer;
+    if (GetModuleFileNameW(reinterpret_cast<HMODULE>(libraryHandle), buffer.data(),
+                           buffer.size()) == 0)
+    {
+        return "";
+    }
+
+    return Narrow(buffer.data());
+}
+
+void *GetLibrarySymbol(void *libraryHandle, const char *symbolName)
+{
+    if (!libraryHandle)
+    {
+        fprintf(stderr, "Module was not loaded\n");
+        return nullptr;
+    }
+
+    return reinterpret_cast<void *>(
+        GetProcAddress(reinterpret_cast<HMODULE>(libraryHandle), symbolName));
+}
+
+void CloseSystemLibrary(void *libraryHandle)
+{
+    if (libraryHandle)
+    {
+        FreeLibrary(reinterpret_cast<HMODULE>(libraryHandle));
+    }
+}
+std::string Narrow(const std::wstring_view &utf16)
+{
+    if (utf16.empty())
+    {
+        return {};
+    }
+    int requiredSize = WideCharToMultiByte(CP_UTF8, 0, utf16.data(), static_cast<int>(utf16.size()),
+                                           nullptr, 0, nullptr, nullptr);
+    std::string utf8(requiredSize, '\0');
+    WideCharToMultiByte(CP_UTF8, 0, utf16.data(), static_cast<int>(utf16.size()), &utf8[0],
+                        requiredSize, nullptr, nullptr);
+    return utf8;
+}
+
+std::wstring Widen(const std::string_view &utf8)
+{
+    if (utf8.empty())
+    {
+        return {};
+    }
+    int requiredSize =
+        MultiByteToWideChar(CP_UTF8, 0, utf8.data(), static_cast<int>(utf8.size()), nullptr, 0);
+    std::wstring utf16(requiredSize, L'\0');
+    MultiByteToWideChar(CP_UTF8, 0, utf8.data(), static_cast<int>(utf8.size()), &utf16[0],
+                        requiredSize);
+    return utf16;
+}
+
+}  // namespace angle